The first is of course through much care for the retarded baby's welfare. While it is true that healthcare is business, continuing to live and productivity are also business. Keynes noted that retarded babies were exempt from investment returns in education, technology, and infrastructure. They could not learn, they could not use complicated tools, and they could not participate in expanding infrastructure. They were, from his point of view, utterly worthless from their conception. Keynes' critics have argued that non-retarded babies could not do these things either, yet contend on the fact that retarded babies will not mature into productive and fulfilling adults.